1030304031021 has 12 divisors (see below), whose sum is σ = 1491653929948. Its totient is φ = 685283048064.

The previous prime is 1030304031019. The next prime is 1030304031059. The reversal of 1030304031021 is 1201304030301.

1030304031021 is a `hidden beast` number, since 1 + 0 + 30 + 304 + 0 + 310 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 120405530025 + 909898500996 = 346995^2 + 953886^2 .

It is not a de Polignac number, because 1030304031021 - 2¹ = 1030304031019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1030304030985 and 1030304031003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030304031011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132188050 + ... + 132195843.

Almost surely, 2^{1030304031021} is an apocalyptic number.

It is an amenable number.

1030304031021 is a deficient number, since it is larger than the sum of its proper divisors (461349898927).

1030304031021 is a wasteful number, since it uses less digits than its factorization.

1030304031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264384332 (or 264384329 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1030304031021 its reverse (1201304030301), we get a palindrome (2231608061322).

The spelling of 1030304031021 in words is "one trillion, thirty billion, three hundred four million, thirty-one thousand, twenty-one".